package collection;

import java.util.ArrayList;
import java.util.Collection;

public class CollectionDemo4 {
    public static void main(String[] args) {
        Collection c1 = new ArrayList();
        c1.add("java");
        c1.add("c++");
        c1.add(".net");
        System.out.println("c1"+c1);


        Collection c2 = new ArrayList();
        c2.add(" android");
        c2.add("ios");
        c2.add("java");
        System.out.println("c2"+c2);

        c1.addAll(c2);
        System.out.println("c1"+c1);
        System.out.println("c2"+c2);

        Collection c3 = new ArrayList();
        c3.add("c++");
        c3.add("android");
        c3.add("php");
        System.out.println("c3"+c3);

        boolean containsAll = c1.containsAll(c3);
        System.out.println("c1是否包含c3:"+containsAll);

        c1.retainAll(c3);
        System.out.println("c1"+c1);
        System.out.println("c3"+c3);

        c1.removeAll(c3);
        System.out.println("c1"+c1);
        System.out.println("c3"+c3);



    }
}
